Oil burner



B. C. BERG OIL BURNER Filed March 19. 1923 2 Sheets-Sheet 'l B. C. BERG OIL BURNER Filed Maron 19. 192:5 sheets-sheen 2 QMMDX Patented Oct. 7, 1924.

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BERNHARDT C. BERG, OF LOS ANGELES, CALIFORNI.

OIL BURNER.

Application filed March 19, 1923. SeriaI No. 626,105.

To all 'whom t may concer/a.'

Be it known that l, BERNHARDT C. BERG, a citizen of the United States, residing in Los Angeles, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in Oil Burners, of which the following is a specification.

The purpose of my invention is to provide afburner for burning'crude or fuel oil, kerosene, distillate or the like, and atomizing the. same by steam generated within the device itself instead of atomizing by means of compressed air furnished by an air compressor, or by steam furnished by a boiler. A further object of my invention is to not only generate the steam required to atomize the liquid fuel, but to superheat the steam so generated; dry or superheated steam being of importance in any oil burner, and an essential if intermittent working of the burner is to be obviated.

Other objects of my invention are to provide a means for automatically re-lighting the flame in case it should go out, and to provide a burner which is simple, durable and one in which any tendency to clog is readily overcome. l attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a side elevation. Figure 2 is a front elevation. Figure 3 is a top plan view with the atomizer removed. Figure 4v is a detail top plan of the ignition pan. Figure 5 is a side elevation of the atomizer. Figure 6 is a top plan view of the atomizer. Figure 7 is a vertical central section of the atomizer taken on the line 1-1 in Figure 6. Figure 8 is a. detail side elevation of the clean-out plunger. Figure 9 is a side elevation showing the automatic re-lighter atthe liquid fuel used for priming or ignition tached. Figure 10 is a detail top plan of the re-lighter. Figure 11 is a vertical central section of the re-lighter taken on the line 2-2 of Figure 10. Figure 12 is an end elevation of the re-lighter. Similar numbers refer to similar parts in the several Views.

The construction of my device is as follows: l1 is a base or ignition pan which is preferably a shallow `casting having an open top and side wallsl 10, strengthened by thel ribs 12; the said ribs having slots 13 so that may readily flow' to' all parts of the pan 11.

" The pan 11 may be of any desired shape or size, but is preferably constructed asy shown. lnan approximately central position in said pan is a raised boss 14 adapted to form a support for the base 15 of the steam generator 16, the latter being secured to theboss la by the screw 17. It is obvious that the pan 11 and the steam generator 16 could be made integral if desired, but'the construction shown is preferred as being more suitable bot-h as regards manufacture, and for i ease of renewal if the same should become necessary. The steam generator 16 is a hollow, table-like casting of rectangular shape in its rearward portion, and semi-circular in its forward portion; the said forward portion `havinoa. semi-circular lip 18 which flares outwardly beyondl the body of the generator 16. In an approximately central position on the bottom o-f the steam generator 16 yis a'downwa'rdly projectino boss or base 15 which is adapted to lit the similar raised boss 14 ofthe ignition pan 11. The

boss 15 jhas a cored passage 19 .connecting` with the hollowl core or chamber 20 of the of the steam generator 16 is supporting A boss 27 which, together with the pipe 25 serve to firmly support the superheater 26. The superheater 26 consists' of a shallow, hollow casting of approximately horse-shoe shape with closed rear end.` lt is so -positioned by its supporting pipe 25 and boss 27 above the steam generator 16, as `to project somewhat back of the saidfgenerator. Its

forward' semi-circular end is located back of the lip 18, and its annular lcross-section is inclined forwardly and downwardly to the vertical axis of the generator 16.A ,The outer sides of the superheater 26* are also somewhat inclined, the outer width of the superheater being less across thev to i the base. T'lie purpose of theselocations and shapes will be more fully hereinafter described. At the rear of the superheater. 26, on its upper surface and onits longitudinal aXis is a boss 28 adapted to receive av pipe than across 29 which serves to support the atomizer 30 and to connect the superheater 26 with the steam chamber 31 of the said atomizer 30.

The atomizer 3() consists of an integral casting in which 31 is a steam chamber connected to the superheater 26 by the pipe 29, and having at its forward end a steam nozzle 33. 34 is a fuel chamberl connected with a. source of fuel supply by the pipe 35 and having a fuel nozzle 36 downwardly inclined to the axis of the steam nozzle 33 and having its opening close to and just above the said steam nozzle. The fuel supply pipe 35 is provided with a fuel control valve 32. 37 is a plunger consisting of a pointed rod adapted to be reciprocated in the steam chamber 31 and into and through the steam nozzle 33 in case the latter should become clogged in any way. Leakage of steam around the plunger 37 is, prevented by the gland 38.

The construction of the re-lighting device, shown in Figures 9 to 12 inclusive9 is as follows: In place of the pipe 29 the atomizer 30 is connected to the superheater 26 by the bent pipe 40, the elbow 41 and the pipe 42. The base 43 of the re-lighter 45 is mounted on the pipe being secured thereto by the set screw 44. The re-lighter consists of a base 43 having integral with it a cup 45 adapted to contain asbestos wicking 4G, or other suitable absorbent and non-inflammable material. Screwed into the cup 45 is a stud 47 ,y flattened at its upper end and vertically adjustable by means of the screw thread on its lower end, so that it may be raised to intercept the lower line of the spray from the atomizer as indicated by the line 51. A short tube 48 is secured to the boss 28 by the screw 49 and serves to protect the flame or spray from the atomizer from cross drafts.

The operation of my device is as follows: All 'of the parts having been assembled as hereinbefore described; 'the pipe 21 is connected 'with a water supply from a pressure system or from an elevated tank, and the pipe 35 connected with a fuel supply. The pet cock 24 and the water valve 23 are then opened and allowed to remain open until Athe water drips from the p'et cock 24, when both the water valve 23 and the pet cock 24 are closed. Liquid fuel is then poured into the ignition pan 1l and lighted. If desired, papers or other combustible material may also be placed in the pan 11, but this is not essential. The plunger 37 is drawn back out of the steam nozzle 33, being held in position by the friction vof the gland 38. vThe heat from the burning fuel in the pan 11 boils the water in the steam generator 16, converting the same into steam which rises through the sup'erlieater 216 into the atomizer 30 and issues from the steam nozzle 33. The fuel supply valve 32 is then opened as is also the water valve 23. The liquid fuel flows down fronil the fuel nozzle 36 onto the streani of steam blowing out of the steam nozzle 33 and is atomized or blown into a spray.

This spray, on account of the inclination of the atomizer 30 is directed downwardly at an angle until it strikes the fiat upper surface of the steam generator 16, first passing through the central opening of the superheater 26. The Haine from the burning fuel in the ignition pan 11 ignites the spray of fuel and steam, produces a conical flame which on striking the flat upper surface of the steam generator 15 flattens into a fanshaped flame shooting out between the top of the said steam generator and the underside of the superheater 2G, the lip 13 serving to detern'iine the shape and direction of the flame as it leaves the burner. The shape of the lip 13 may be made of various contours to more suitably adapt the shape of the llame to the various purposes for which the burner may be used, or to the different types of fire-boxes. The fuel in the ignition pan 11 burns itself out but the steam is now gen erated by the flame from the atoinizer 30 against the steam Vgenerator 1Ga and as the steam rises through the superheater 23 it bem comes superheated before passing up into the atomizer 30. This is of great advantage in operation, as dry steam insures a steadier fire than could be obtained from the use of wet steam. The amount or intensity of flame and heat may be regulated by the water valve 23 and the fuel valve 32. ln case the steam nozzle should become clogged from any cause, the plunger 37 is reciprocated by hand in and out of the said steam nozzle, thus clearing the same of any ol struction. The purpose of the reduced width of the top of the superheater as compared with its base is to cause the flame rising about it to cling to its sides closer than it would if the sides were perpendiculan The automatic re-li'ghter is used where the burner is used in the open air or where it is subject to heavy cross drafts of air. The re-lighter 45 is filled with material such as asbestos wicking and is so adjusted longi tudinally on the pipe 40 and its intercepter 47 so adjusted as to height that the said adjuster projects upwardly until it intercepts the spray as indicated by the line 51. This intercepts a small quantity of fuel so that the wicking 46 is saturated and burns constantly thus, in case the flame should be extinguished providing' a pilot light which automatically re-lights the spray. The tube 48 is designed to shield or protect the flame from heavy drafts which would tend to divert it from the direction indicated by the lines 50 and 51. rlhe use of the re-lighter is not essential but under many conditions it is of great advantage and improves the working of the burner.

It is obvious that many changes and modiiications may be made in my invention; such as making a part or all of the members integral, or modifying the shape of the various parts; all of such modications being made without departing from the true spirit of my invention.

lWhat I claim as my invention and desire to secure by Letters Patent is l. An oil burner; including an atomizing member; there being means joined with said atomizing member for generating and superheating steam for use in said atomizing member; said means comprising a hollow steam generating chamber beneath and relatively inclined to the axis of said atomizing member; a hollow, annular superheating chamber relatively spaced above said steam generating chamber, having said atomizing member mounted thereon; and steam connections between said steam generating chamber; .said superheating chamber and said atomizing member.

Q. An oil burner, including an atomizing member, there being means joined with said atomizing member for generating and superheating steam for use in said atomizing member; said means comprising a hollow steam generating chamber beneath and relatively inclined to the axis of said atomizing member; a hollow, annular superheating chamber relatively spaced above said steam generating chamber and having said atomizing member mounted thereon; means likewise being providedfor the supply and regulation of liquid fuel and water to said atomizing member and said steam generating chamber respectively7 and means V for the conveyance of steam from said steam generating chamber to said superheating chamber and from said superheating chamber to said atomizing member.

3. An oil burner, including an atomizing member and means for re-lighting the spray from said atomizing member7 said means comprising a cup adjustably mounted relatively below and in front of said atomizing member, said cup being provided with absorbent land non-inflammable material; an intercepting member adjustably mounted on said cup and adapted to be raised into the path of the spray from said atomizing member; likewise means for protecting the flame 'from said atomiz'ing member, said means comprising a tubular member so located in Jfront of the said atomizing member as to enclose the flame from said atomizing member.

BERNHARDT C. BERG. Witnesses:

A. J. LIVENGooD, M. L. DE KEYSER. 

